CN103389581A - Laser designator and optical input device - Google Patents
Laser designator and optical input device Download PDFInfo
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- CN103389581A CN103389581A CN201210144314XA CN201210144314A CN103389581A CN 103389581 A CN103389581 A CN 103389581A CN 201210144314X A CN201210144314X A CN 201210144314XA CN 201210144314 A CN201210144314 A CN 201210144314A CN 103389581 A CN103389581 A CN 103389581A
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Abstract
The invention provides a laser designator. The laser designator comprises at least two light sources and a light path synthesizer, wherein the at least two light sources are used for emitting at least first wavelength light and second wavelength light respectively; the light path synthesizer is used for enabling a first light beam of the first wavelength light and a second light beam of the second wavelength light to be synthesized to form an output light beam; in the output light beam, the optical axis of the first light beam is parallel with the optical axis of the second light beam, and the first light beam is located on the periphery of the second light beam. By means of the single laser designator, input is conducted by changing the optical properties of light-sensitive materials on an optical input panel, and the light-sensitive materials can restore the initial optical properties after a light spot is moved off. The invention further provides an optical input device with the laser designator utilized.
Description
Technical field
The present invention relates to a kind of laser designator, more specifically, the light input equipment that relates to a kind of multiwavelength laser indicator and utilize this laser designator.
Background technology
Current, touch pad has obtained widespread use.Input technology for touch panel system also receives people's concern thereupon.A kind of main input technology for touch panel system is not need, by modes such as remote controls, to utilize light wave input near system.Traditional laser designator is sent monochromatic light.For example, in traditional projector, laser designator is sent red light, forms red hot spot on the curtain of projector, with the user to watching demonstration, shows position pointed.But, this laser designator can't be applied to lcd screen, and this is that for example lamination has anti-reflecting layer because current lcd screen is treated to and has low surface reflectivity, therefore when the irradiation of the incident light source with traditional lcd screen, be difficult to see luminous point on lcd screen.
In some improved optical touch pad systems, apply one deck photochromics or place an indicator board that comprises photochromics in display screen the place ahead on display screen.When the irradiation display screen with specific wavelength, the optical property of photochromics changes, thereby presents the variation of color.This optical touch pad system is utilized variation rather than the reflected light of the optical property of photochromics, therefore can apply in conjunction with lcd screen.
This photochromics comprises from restorer and non-from restorer.After the light of irradiation was removed, its optical property was recovered automatically from restorer.Non-ly from restorer, can't automatically recover its optical property., for this material, need to utilize the light of predetermined wavelength or heat to excite its recovery.
Therefore, the laser designator of sending single wavelength light can't be applied to have the non-system of optical touch pad from restorer.
Some multiwavelength laser indicators of current existence, but these multiwavelength laser indicators generally are used for realizing many signal outputs.
For example, a kind of remote control interactive pen is provided in patent documentation 1, it comprises: power supply, laser module, control module, lens group, be provided with reflective mirror in lens group, the laser module comprises visible light laser module and infrared laser module, infrared light coaxial outgoing after lens group reflects of the visible light of visible light laser module emission and the emission of infrared laser module; Visible light laser module emission visible light allows the operator accurately know position and the movement locus of interaction pen, freely control the motion of interaction pen, infrared laser module emission infrared light, detect its launching position by receiver, positional information is converted to mouse signal is used for interactive operation; A kind of receiver of interaction pen separately is provided, is provided with the corresponding narrow band pass filter of infrared light spectrum of exporting with interaction pen, reduce extraneous light and disturb, improve job stability.
Patent documentation 2 discloses a kind of laser designator, wherein, operate red laser diode or green laser diode by operating a switch,, to produce redness or green light, make the user to select redness or green light according to its preference, wherein, make red laser diode and green laser diode work simultaneously by operating switch, can present yellow light, therefore, the user can select redness, green or yellow light according to its preference, thereby obtains the light of multiple color.
Light as a plurality of wavelength in the output beam of patent documentation 1 and 2 described laser designator is spatially mixed in together, and is not suitable for and has the non-system of optical touch pad from restorer.
Patent documentation:
(1) the open CN 101833385A of Chinese invention patent application, on September 15th, 2010;
(2) International Patent Application Publication WO 2009/102096A1, on August 20th, 2009.
Summary of the invention
As mentioned above, existing laser designator and be not suitable for improved optical touch pad system.
The present invention proposes in order to address the above problem, and its purpose is to provide a kind of laser designator that is applicable to improved optical touch pad system, and the light input equipment that comprises this laser designator.
According to a first aspect of the invention, provide a kind of laser designator, comprising: at least two light sources are used for sending respectively the long light of first wave at least and the light of second wave length; And light path compositor, be used for making the first light beam of the first wavelength light and the second light beam of second wave length light to close road to form output beam, wherein, in described output beam, described the first light beam is parallel with the optical axis of described the second light beam, and described the first light beam is in the periphery of described the second light beam.
Preferably, described light path compositor also comprises: light-baffling device, be used for stopping a part of the first light beam, and form the first light beam of hollow, wherein, in output beam, described the second light beam is in the first light beam in the formed space of described light-baffling device.
Preferably, described the second light beam is fully in the formed space of described light-baffling device.
Preferably, described the second light beam and described the first beam section are overlapping, and the outermost of output beam is the first light beam.
Preferably, described light path compositor also comprises: collimation lens before being positioned over one of described at least two light sources, is used to form the first light beam of collimation and/or the second light beam of collimation.
Preferably, described light path compositor also comprises: concave mirror, one of described at least two light sources are positioned over the focus place of described concave mirror, to form the first parallel light beam and/or the second parallel light beam.
Preferably, described light path compositor also comprises: bandpass filter, can transmission the first light beam and reflect the second light beam, wherein, described the first light beam and described the second light beam incide described bandpass filter with+45 ° and-45 ° respectively, the first light beam of transmission and the second light beam of reflection close road, to form output beam.
Preferably, described light path compositor also comprises: catoptron, and wherein the second light beam incides on catoptron, and the second light beam of reflection incides described bandpass filter with-45 °.
Preferably, described light path compositor also comprises: semi-transparent semi-reflecting lens, incide the first light beam of semi-transparent semi-reflecting lens and the second light beam can transmission by described semi-transparent semi-reflecting lens and be reflected, wherein, described the first light beam and described the second light beam incide described semi-transparent semi-reflecting lens with+45 ° and-45 ° respectively, the first light beam of transmission and the second light beam of reflection close road, to form output beam.
Preferably, in output beam, the xsect of described the first light beam and the second light beam is circle.
Preferably, in output beam, the first light beam and the second light beam are coaxial.
Preferably, described first wave is about as 700nm, and described second wave length is about 400nm.
Preferably, described laser designator also comprises: delay circuit is used for, when cutting out the power supply of laser designator, the light source that sends the first wavelength light is continued power supply a period of time.
Preferably, described laser designator also comprises: mode switch button is used for switched laser indicator between position pointing-type and light input pattern.
According to a second aspect of the invention, provide a kind of smooth input equipment, comprising: the optical input surface plate comprises photochromics; And, according to laser designator of the present invention, be used for the light beam that sends to described optical input surface plate irradiation, wherein, described photochromics optical property under the irradiation of second wave length light changes, and optical property is recovered under the irradiation of the first wavelength light.
According to the present invention, can be by single laser designator, realize referring to not/input and the just effect of its photochromics recovery initial optical character after luminous point is removed by the optical property that changes the photochromics on the optical input surface plate.Therefore, laser designator according to the present invention makes can identify the position of luminous point on photochromics, but can not stay permanent mark after luminous point moves.
Description of drawings
According to following description, additional object of the present invention, feature and advantage will be more readily apparent from.And according to the following explanation of reference accompanying drawing, advantage of the present invention will be significantly, in accompanying drawing:
Fig. 1 shows the schematic diagram according to the light input equipment of first embodiment of the invention;
Fig. 2 shows the schematic diagram according to the optical property of the photochromics of the embodiment of the present invention;
Fig. 3 shows the block diagram according to the structure of the laser designator of first embodiment of the invention;
Fig. 4 shows the schematic diagram according to the laser designator of first embodiment of the invention;
Fig. 5 shows the block diagram according to the structure of the laser designator of second embodiment of the invention;
Fig. 6 shows the block diagram according to the structure of the laser designator of third embodiment of the invention;
Fig. 7 shows the block diagram according to the structure of the laser designator of fourth embodiment of the invention.
Fig. 8 shows the block diagram of the structure of the laser designator of another example according to the present invention;
Fig. 9 shows the block diagram of the structure of the laser designator of another example according to the present invention; And
Figure 10 shows the schematic diagram according to the xsect of the multiple output beam of the embodiment of the present invention.
Embodiment
Now will be by illustrative example and preferred embodiment with reference to the accompanying drawings to describe the present invention.In whole instructions and accompanying drawing, identical Reference numeral represents identical assembly.
[the first embodiment]
Fig. 1 shows the schematic diagram according to the light input equipment 10 of first embodiment of the invention.
As shown in Figure 1, light input equipment 10 comprises optical input surface plate 110 and laser designator 120.
The optical input surface plate can be transparent panel, comprises photochromics.Photochromics can comprise: any one in photochromic material, photorefractive material and photic deformable material.
When optical input surface plate 110 was placed on a display screen the place ahead, the user can see in the content that shows screen display., as example, figure 1 illustrates and show two buttons to be instructed on display screen: confirming button and cancel button.
As not routine, in the present embodiment, photochromics is comprised of two thiene-3-yl--perfluoro-cyclopentenes.
Fig. 2 shows the schematic diagram of the optical property of this photochromics.Two thiene-3-yl--perfluoro-cyclopentenes are a kind of photochromic materials, and its absorption characteristic can change under the exciting of the light of specific wavelength.Being shown in dotted line in the absorption characteristic that there is no the two thiene-3-yl-s-perfluoro-cyclopentene material in light-struck situation in Fig. 2, the solid line in Fig. 2 show the absorption characteristic of two thiene-3-yl-s in light-struck situation of 400nm-perfluoro-cyclopentene material.
As seen from Figure 2, when there is no irradiation, two thiene-3-yl--perfluoro-cyclopentenes are that the absorptivity of light of 700nm is very low to wavelength.When being about this material of irradiation of 400nm with wavelength, two thiene-3-yl-s-perfluoro-cyclopentene material is excited, and its optical absorption characteristics changes, and the absorptivity that is the light of 700nm left and right to wavelength strengthens.
But the wavelength in Fig. 2 and absorptivity are only schematically, do not represent the accurate absorptivity of this material and the relation of wavelength.
When laser designator 120 is sent the light that wavelength is 400nm, and while point to showing " determining " button of screen display, light will form diameter on optical input surface plate 110 be the luminous point of 1～5mm.At the luminous point place, the optical absorption characteristics of two thiene-3-yl-s-perfluoro-cyclopentene material changes, and is large to the absorptivity change of the light in the 550-850nm wavelength coverage.Therefore, when the user of hand-held laser designator 120 checks display screen, can see, the light spot position place is by the transparent mazarine that becomes, thereby this user can confirm to point to " determining " button on the display screen.If the device that detects the position that absorptivity changes is set in the optical input surface plate, can further determines light spot position.For example, can built-in light source be set in a side of optical input surface plate, and at opposite side, photodetector be set.Built-in light source is to the light of photochromics irradiation 750-950nm.Due at the luminous point place, two thiene-3-yl-s-perfluoro-cyclopentene material becomes large to the absorptivity of the light in the 550-850nm wavelength coverage, so the light in the 750-850nm of luminous point place scope is absorbed.The photodetector staggered relatively with built-in light source receives the light of transmission by two thiene-3-yl-s-perfluoro-cyclopentene material.Obviously, the light ratio that receives at the light spot position place of photodetector is faint at the light that other positions receive.Like this, the processor that is connected with photodetector can be determined the position of luminous point on the optical input surface plate according to the testing result of photodetector, thereby realizes the light input.
But two thiene-3-yl-s-perfluoro-cyclopentene right and wrong are from restorer.When the luminous point of laser designator 120 moves, while for example, moving to " cancellation " button, previous " determining " button still remained mazarine.
At this moment,, if to " determining " button illumination wavelength, be the light of 700nm, will make two thiene-3-yl-s at " determining " button place-perfluoro-cyclopentene material recover its initial absorption characteristic, namely revert to clear, colorless.
Fig. 3 shows the block diagram according to the structure of the laser designator 300 of first embodiment of the invention.As shown in Figure 3, laser designator 300 comprises: light source 310 and light source 320 are used for sending respectively the light of 700nm and 400nm wavelength; The light path compositor, be used for making the light beam of 700nm and the light beam of 400nm to close road to form output beam.
Fig. 3 right side shows the hot spot of output beam on the optical input surface plate.As shown in Figure 3, hot spot is circular, and the light beam of 400nm is interior ring (being expressed as in the drawings black), and the light beam of 700nm is outer shroud (being expressed as in the drawings white).
When " determining " button with on laser designator 300 irradiation display screens, the light beam of 400nm will make the luminous point place on the optical input surface plate become mazarine.Luminous point when laser designator 300 moves subsequently, while pointing to " cancellation " button, during luminous point moves, the light beam of the 700nm of outer shroud will be strafed " determining " button, make the absorption characteristic of two thiene-3-yl-s at " determining " button place-perfluoro-cyclopentene material recover.
Therefore, utilize the laser designator according to the embodiment of the present invention, can realize inputting and recovering the function of the absorption characteristic of photochromics on the optical input surface plate after luminous point is removed.
As mentioned above, photochromics can comprise: any one in photochromic material, photorefractive material and photic deformable material.Photochromic material optical absorption characteristics under the irradiation of special wavelength light can change.Photorefractive material refractive index under the irradiation of special wavelength light can change.Photic deformable material profile under the irradiation of special wavelength light can change, and the change of profile can cause the change of refraction or scattering effect.Change the refraction that causes or the variation of scattering effect by detecting absorption characteristic, refractive index or profile, can determine the irradiation position of light.
As shown in Figure 3, according to the light path compositor of the laser designator 300 of the embodiment of the present invention, comprise: light-baffling device 330, be positioned at the center of 700nm light beam, make the 700nm light beam form the light beam of hollow; Collimation lens 340, be used for respectively 700nm light beam and 400nm light beam being collimated; And bandpass filter 350, it can make the light transmission of 700nm pass through, and the light of reflection 400nm.
As shown in Figure 3, disposed respectively collimation lens before light source 310 and light source 320.As example, the 700nm light beam by collimation lens is the circular light beam of external diameter R1.Light-baffling device 330 is the disk of diameter R2, and R2 is less than R1.Light-baffling device 330 is concentric with the 700nm light beam.Form the annular beam of external diameter R1, internal diameter R2 by the 70nm light beam of light-baffling device.The 700nm light beam of ring-type incides on bandpass filter 350, and transmission is by bandpass filter 350.The 400nm light beam that light source 320 sends shines on bandpass filter 350 after the collimation of collimation lens 340, by bandpass filter 350, reflected.The light path of the 400nm light beam of reflection is consistent with the light path of the 700nm light beam of ring-type.The external diameter of 400nm light beam is R3, and R3 is not more than R2.At this, need to adjust the light path of two light beams, make the optical axis of 400nm light beam and the optical axis coincidence of 700nm light beam, thereby two light beams spatially can be not overlapping.Like this, the hot spot of output beam on the optical input surface plate will be as shown in Fig. 3 right side.
As mentioned above, the light that sends according to the laser designator of the embodiment of the present invention can be so that the color of institute's irradiation position changes, thereby the user can see intuitively.In addition,, if the device that detects the position that absorptivity changes is set in the optical input surface plate, can further determine light spot position.Can work in the position pointing-type according to the laser designator of the embodiment of the present invention, perhaps the light input pattern.In this case, in the optical input surface plate, the pattern commutation circuit can be set, be used for the mode of operation according to laser designator, the light beam that laser designator is shone is made different responses.For example, do not respond under the pointing-type of position, thereby the user sees the position of light indication intuitively.Perhaps, under the pointing-type of position on panel determined light spot position place show tags, to indicate the position of luminous point to the user.Perhaps, under the light input pattern, in response to luminous point being detected, on counter plate, the content of luminous point position is further processed.Therefore, under the light input pattern, according to the laser designator of the embodiment of the present invention, can be used as light input equipment, such as long-range " mouse ", " telepilot " etc.
Fig. 4 shows the schematic diagram according to the laser designator of first embodiment of the invention.As shown in Figure 4, two buttons 401 and 402 can be set on the shell of the laser designator according to the embodiment of the present invention, be used for the mode of operation of switched laser indicator.Pressing the button at 401 o'clock, the light that laser designator is sent only has position indicating function on display screen, and presses the button at 402 o'clock, and the light that laser designator is sent also has click function.Pressing the button 401 or at 402 o'clock, laser designator is sent wireless signal to the optical input surface plate, indicates its mode of operation.Certainly, a button only is set and also can realizes the switching of mode of operation.One skilled in the art will recognize that other implementations of carrying out the pattern switching are also feasible.For example, button is arranged on the optical input surface plate.
[the second embodiment]
Fig. 5 shows the block diagram according to the structure of the laser designator 500 of second embodiment of the invention.
As Fig. 5 institute, laser does not refer to that the structure of device 500 not is similar with the structure of laser designator 300 according to first embodiment of the invention, has just wherein replaced bandpass filter 350 with semi-transparent semi-reflecting lens 550.
The 700nm light beam of ring-type incides on semi-transparent semi-reflecting lens 550, and a part of transmission is passed through, and a part is reflected.Similarly, the 400nm light beam incides on semi-transparent semi-reflecting lens 550, and a part of transmission is passed through, and a part is reflected.The 700nm light beam of transmission and the 400nm light beam of reflection close road, and be identical with the first embodiment, forms coaxial beam.
[the 3rd embodiment]
Fig. 6 shows the block diagram according to the structure of the laser designator 600 of third embodiment of the invention.
As shown in the figure, comprise according to the laser designator 600 of the 3rd embodiment: light source 610 and light source 620; Light-baffling device 630; And optical system 640.
Light source 610, light source 620 and light-baffling device 630 are identical with light source and light-baffling device in laser designator according to the first and second embodiment.
In laser designator 600, horizontal infection after the optical alignment that light source 610 and light source 620 send.The light path compositor comprises optical system 640, comprises the catoptron on the light path that is positioned at the 400nm light beam and is positioned at bandpass filter on the light path of 700nm light beam.The 400nm light beam after mirror reflects, incides on bandpass filter.This bandpass filter is identical with the bandpass filter 350 in laser designator 300 according to the first embodiment, reflection 400nm light beam and transmission 700nm light beam.Therefore, can form equally double-ring output beam as shown in the figure right side.
[the 4th embodiment]
Fig. 7 shows the block diagram according to the structure of the laser designator 700 of fourth embodiment of the invention.
As shown in the figure, comprise according to the laser designator 700 of the 4th embodiment: light source 710 and light source 720 and delay circuit 730.
Identical with the light source in laser designator according to the first～the 3rd embodiment with 720 according to the light source 710 of the embodiment of the present invention, send respectively the light of 700nm and 400nm wavelength.
Be furnished with delay circuit 730 in the laser designator 700 according to the embodiment of the present invention.In Fig. 7, this delayed current source 730 is shown the capacitor in parallel with light source 710.When power turn-on, light source 710 and light source 720 are all opened, and laser designator is sent the light of 700nm and 400nm.At this moment, capacitor charging.When power supply disconnects, capacitor discharge, thereby to light source 710 power supplies.And this moment, light source 720 is closed.Therefore, light source 710 was still worked in a period of time after power supply disconnects.
The light of 700nm will still be sent according to the laser designator 700 of the embodiment of the present invention in a period of time after closing.Therefore, can so that on the optical input surface plate a little all recover its initial absorption characteristic.
Certainly, delay circuit according to the present invention is not limited to the capacitor in parallel with light source 710.Other delay circuits also are applicable to the present invention.
[other examples]
In the above embodiments, after light-baffling device is positioned at collimation lens.Certainly, before light-baffling device also can be positioned at collimation lens, even among collimation lens.
The light path compositor can be according to different light source arrangement and difference can comprise various optical device, such as diaphotoscope, catoptron, semi-transparent semi-reflecting lens, bandpass filter etc.Fig. 8 shows the block diagram of the structure of the laser designator of another example according to the present invention, wherein, two light sources sequentially are placed on light path, after the light source that sends second wave length light is placed on light-baffling device, after Fig. 8 (a) shows the collimation lens that light-baffling device is positioned at the light source that sends the first wavelength light, Fig. 8 (b) shows among the collimation lens that light-baffling device is positioned at the light source that sends the first wavelength light, Fig. 8 (c) show light-baffling device be positioned at the light source that sends the first wavelength light after, before collimation lens.
In the above-described embodiments, collimation lens is parallel beam for making the light that light source sends.Certainly, also can form parallel beam with other optical device.Fig. 9 shows the block diagram of the structure of the laser designator of another example according to the present invention, wherein uses the collimation lens in concave mirror replacement Fig. 8, and light source is positioned at the focus place of concave mirror.As shown in the figure, in Fig. 9 (a), concave mirror has replaced the collimation lens of the light source that sends the first wavelength light, in Fig. 9 (b), concave mirror has replaced the collimation lens of two light sources, and in Fig. 9 (c), concave mirror has replaced the collimation lens of the light source that sends the first wavelength light.Also can find out from Fig. 9 (a), in some cases, if it is suitable to send the light source size of the first wavelength light, what for to omitting light-baffling device, and by light source self, serve as light-baffling device.In addition, from Fig. 9 (b) and 9 (c), also can find out, in some cases, even can omit light-baffling device, be stopped the light of a part of the first wavelength by the reflective mirror of the light source that sends second wave length light.
In the above embodiments, formed output beam is coaxial beam.Certainly, the out-of-alignment parallel beam also is applicable to the present invention.Figure 10 shows the schematic diagram according to the xsect of the multiple output beam of the embodiment of the present invention.In figure, left tiltedly line part is depicted as the light beam of 700nm wavelength, and right tiltedly line part is depicted as the light beam of 400nm wavelength.Figure 10 (a) shows coaxial light beam, and the light beam of 400nm wavelength is filled the core of 700nm wavelength light beam just fully; Figure 10 (b) shows the center of 400nm BEAM SQUINT 700nm light beam; Figure 10 (c) shows the 400nm light beam and not only departs from the center of 700nm light beam, and its xsect is oval rather than circular, and has some gaps between two light beams; Figure 10 (d) shows the 400nm light beam and not only departs from the center of 700nm light beam, and two light beams overlap, but the overlapping inside that occurs over just output beam, the outermost of output beam only has the 700nm light beam.
Therefore, it is not very strict that the present invention requires with respect to the adjustment between 700nm light beam, 400nm light-beam position for light-baffling device, as long as the 700nm light beam, in the periphery of 400nm light beam, just is applicable to the present invention.
In addition, in the above embodiments, take two thiene-3-yl--perfluoro-cyclopentenes, as photochromics, be illustrated as example.Two wavelength of laser designator are respectively the excitation wavelength of two thiene-3-yl--perfluoro-cyclopentenes and recover wavelength.The light input equipment that has the other materials of different excitation wavelengths and recovery wavelength for use, two wavelength of laser designator also can be different.
Although showed and described specific embodiment of the present invention and application, having should be appreciated that and the invention is not restricted to accurate configuration disclosed herein and element.Under the prerequisite that does not depart from marrow of the present invention and protection domain, can carry out very obvious various modifications, distortion and variation for a person skilled in the art on configuration, operation and the details of method and system of the present invention disclosed herein.
Claims (20)
1. a laser refers to not device, comprising:
At least two light sources, be used for sending respectively the long light of first wave at least and the light of second wave length; And
The light path compositor, be used for making the first light beam of the first wavelength light and the second light beam of second wave length light to close road to form output beam,
Wherein, in described output beam, described the first light beam is parallel with the optical axis of described the second light beam, and described the first light beam is in the periphery of described the second light beam.
2. laser designator according to claim 1, wherein, described light path compositor also comprises:
Light-baffling device, be used for stopping a part of the first light beam, forms the first light beam of hollow,
Wherein, in output beam, described the second light beam is in the first light beam in the formed space of described light-baffling device.
3. laser designator according to claim 2, wherein, described the second light beam is fully in the formed space of described light-baffling device.
4. laser designator according to claim 2, wherein, described the second light beam and described the first beam section are overlapping, and the outermost of output beam is the first light beam.
5. laser designator according to claim 1, wherein, described light path compositor also comprises:
Collimation lens, before being positioned over one of described at least two light sources, be used to form the first light beam of collimation and/or the second light beam of collimation.
6. laser designator according to claim 1, wherein, described light path compositor also comprises:
Concave mirror, one of described at least two light sources are positioned over the focus place of described concave mirror, to form the first parallel light beam and/or the second parallel light beam.
7. laser designator according to claim 1, wherein, described light path compositor also comprises:
Bandpass filter, can transmission the first light beam and reflect the second light beam,
Wherein, described the first light beam and described the second light beam incide described bandpass filter with+45 ° and-45 ° respectively, and the first light beam of transmission and the second light beam of reflection close road, to form output beam.
8. laser designator according to claim 7, wherein, described light path compositor also comprises:
Catoptron, wherein the second light beam incides on catoptron, and the second light beam of reflection incides described bandpass filter with-45 °.
9. laser designator according to claim 1, wherein, described light path compositor also comprises:
Semi-transparent semi-reflecting lens, incide the first light beam of semi-transparent semi-reflecting lens and the second light beam can transmission by described semi-transparent semi-reflecting lens and be reflected,
Wherein, described the first light beam and described the second light beam incide described semi-transparent semi-reflecting lens with+45 ° and-45 ° respectively, and the first light beam of transmission and the second light beam of reflection close road, to form output beam.
10. one of according to claim 1-9 described laser designator, wherein, in output beam, the xsect of described the first light beam and the second light beam is circle.
11. laser designator according to claim 10, wherein, in output beam, the first light beam and the second light beam are coaxial.
12. one of according to claim 1-9 described laser designator, wherein, described first wave is about as 700nm, and described second wave length is about 400nm.
13. one of according to claim 1-9 described laser designator also comprise:
Delay circuit, be used for, when cutting out the power supply of laser designator, the light source that sends the first wavelength light is continued power supply a period of time.
14. one of according to claim 1-9 described laser designator also comprise:
Mode switch button, be used for switched laser indicator between position pointing-type and light input pattern.
15. a light input equipment comprises:
The optical input surface plate, comprise photochromics; And
According to claim 1, one of-14 described laser designator, be used for the output beam that sends to described optical input surface plate irradiation,
Wherein, described photochromics optical property under the irradiation of second wave length light changes, and optical property is recovered under the irradiation of the first wavelength light.
16. smooth input equipment according to claim 15, wherein, the light beam that described laser designator is sent smoothly moves on described optical input surface plate.
17. smooth input equipment according to claim 15, wherein, described photochromics comprises: any one in photochromic material, photorefractive material and photic deformable material.
18. smooth input equipment according to claim 17, wherein, if described photochromics is photochromic material, described optical property is absorption characteristic; If described photochromics is photorefractive material, described optical property is refractive index; If described photochromics is photic deformable material, described optical property is that profile changes caused refraction or scattering effect.
19. smooth input equipment according to claim 17, wherein, described photochromics is two thiene-3-yl--perfluoro-cyclopentenes.
20. smooth input equipment according to claim 15, wherein, described optical input surface plate also comprises: the pattern commutation circuit, be used for the mode of operation according to laser designator, and the light beam that laser designator is shone responds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210144314XA CN103389581A (en) | 2012-05-11 | 2012-05-11 | Laser designator and optical input device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210144314XA CN103389581A (en) | 2012-05-11 | 2012-05-11 | Laser designator and optical input device |
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| CN106933019A (en) * | 2017-03-17 | 2017-07-07 | 赵征桥 | A kind of photochromic projection screen |
| CN107066141A (en) * | 2017-01-23 | 2017-08-18 | 合肥鑫晟光电科技有限公司 | Touch module and preparation method thereof, touching display screen and pulse laser pen |
| CN107168591A (en) * | 2017-07-05 | 2017-09-15 | 京东方科技集团股份有限公司 | Light contact panel, display device |
| WO2018045745A1 (en) * | 2016-09-09 | 2018-03-15 | 京东方科技集团股份有限公司 | Laser touch panel, display device, display system and laser touch method |
| CN109712472A (en) * | 2018-12-08 | 2019-05-03 | 魏磊 | A kind of page turning laser pen |
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2012
- 2012-05-11 CN CN201210144314XA patent/CN103389581A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018045745A1 (en) * | 2016-09-09 | 2018-03-15 | 京东方科技集团股份有限公司 | Laser touch panel, display device, display system and laser touch method |
| US10444929B2 (en) | 2016-09-09 | 2019-10-15 | Boe Technology Group Co., Ltd. | Laser touch panel, display device, display system and laser touch method |
| CN107066141A (en) * | 2017-01-23 | 2017-08-18 | 合肥鑫晟光电科技有限公司 | Touch module and preparation method thereof, touching display screen and pulse laser pen |
| CN107066141B (en) * | 2017-01-23 | 2020-05-01 | 合肥鑫晟光电科技有限公司 | Touch module, manufacturing method thereof, touch display screen and pulse laser pen |
| CN106933019A (en) * | 2017-03-17 | 2017-07-07 | 赵征桥 | A kind of photochromic projection screen |
| CN107168591A (en) * | 2017-07-05 | 2017-09-15 | 京东方科技集团股份有限公司 | Light contact panel, display device |
| CN107168591B (en) * | 2017-07-05 | 2020-03-27 | 京东方科技集团股份有限公司 | Optical touch panel and display device |
| CN109712472A (en) * | 2018-12-08 | 2019-05-03 | 魏磊 | A kind of page turning laser pen |
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Application publication date: 20131113 |